Add Easy Unlock options to chrome://settings behind a flag.

chrome/chrome_browser.gypi

 # Copyright 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'none',
       'dependencies': [ 'browser_real', ],
@@ skipping 2087 matching lines @@
         'browser/signin/about_signin_internals_factory.cc',
         'browser/signin/about_signin_internals_factory.h',
         'browser/signin/account_reconcilor.cc',
         'browser/signin/account_reconcilor.h',
         'browser/signin/account_reconcilor_factory.cc',
         'browser/signin/account_reconcilor_factory.h',
         'browser/signin/chrome_signin_client.cc',
         'browser/signin/chrome_signin_client.h',
         'browser/signin/chrome_signin_client_factory.cc',
         'browser/signin/chrome_signin_client_factory.h',
+        'browser/signin/easy_unlock_controller.cc',
+        'browser/signin/easy_unlock_controller.h',
         'browser/signin/local_auth.cc',
         'browser/signin/local_auth.h',
         'browser/signin/mutable_profile_oauth2_token_service.cc',
         'browser/signin/mutable_profile_oauth2_token_service.h',
         'browser/signin/principals_message_filter.cc',
         'browser/signin/principals_message_filter.h',
         'browser/signin/profile_oauth2_token_service.cc',
         'browser/signin/profile_oauth2_token_service.h',
         'browser/signin/profile_oauth2_token_service_factory.cc',
         'browser/signin/profile_oauth2_token_service_factory.h',
@@ skipping 1689 matching lines @@
             'package_name': 'org/chromium/chrome/browser',
             'template_deps': ['browser/android/tab_load_status.h'],
           },
           'includes': [ '../build/android/java_cpp_template.gypi' ],
         },
       ],
      },
     ],
   ],
 }